000 00564nam a2200181Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a651.2643
_bB634
100 _aBlaine R G
245 _aSlide rule as an aid calculating, with a short description of some other labour-saving methods employed by the modern calculator, with numerous examples worked out
250 _a6th
260 _aLondon
_bE & F.n. Spon
300 _axii,152p.
650 _acalculator
650 _aStatistical machine
942 _cBK
999 _c41105
_d41105